Question

afla nr. necunoscute ,apoi, verifica efectuind proba prin operati inversa



a) x5=45 b) x8=8 c) 8x =32 d)9x =54
49 : =7 28: =4 30: =3
: 9=7

Answer 1

a) x= 45:5 = 9
9*5= 45
b) x= 8:8 = 1
1*8=8
c) x= 32:8= 4
4*8=32
d) x=54:9 =6
6*9= 54
e) x= 49:7=7
d) x= 28:4 =7
f) x=30:3=10